Using ZINC08918027 inhibitor to determine Aurora kinase-chromosomal passenger complex isoforms in mouse oocytes.

Using ZINC08918027 inhibitor to determine Aurora kinase-chromosomal passenger complex isoforms in mouse oocytes.
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DOI:
10.1186/s13104-022-05987-4
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发表时间:
2022-03-07
期刊:
影响因子:
1.8
通讯作者:
Schindler K
Schindler K
中科院分区:
其他
文献类型:
--
作者:
Kratka C;Drutovic D;Blengini CS;Schindler K

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25-29岁的妇女中有10%流产,45岁以上的妇女中有53%流产。流产的主要原因是起源于卵子的非整倍体。Aurora激酶家族有三个成员调节染色体分离。因此,区分这些异构体的作用对于理解非整倍体病因学是重要的。在减数分裂中,极光激酶A(AURKA)定位于纺锤体极,在那里它结合TPX 2。极光激酶C(AURKC)定位于染色体上,在那里它通过INCENP结合取代AURKB作为染色体乘客复合物(CPC)中的主要AURK。尽管AURKA补偿了缺乏AURKB/C的卵母细胞中的CPC功能,但尚不清楚AURKA是否结合野生型小鼠卵母细胞中的INCENP。ZINC 08918027(ZC)是一种抑制剂,可阻止有丝分裂细胞中AURKB和INCENP之间的相互作用。我们假设ZC将阻断CPC的任何AURK亚型的功能。ZC处理引起减数分裂进程和纺锤体构建的缺陷。通过免疫印迹和免疫荧光,我们观察到ZC处理的卵母细胞中激活的AURKA和AURKC水平与对照相比降低。这些结果表明,在小鼠卵母细胞中存在AURKA-CPC群体。这些数据共同表明,INCENP依赖的AURKA和AURKC活动所需的纺锤体两极和减数分裂进程。在线版本包含补充材料,可通过10.1186/s13104-022-05987-4获得。
Miscarriages affect 10% of women aged 25–29, and 53% of women over 45. The primary cause of miscarriage is aneuploidy that originated in eggs. The Aurora kinase family has three members that regulate chromosome segregation. Therefore, distinguishing the roles of these isoforms is important to understand aneuploidy etiology. In meiosis, Aurora kinase A (AURKA) localizes to spindle poles, where it binds TPX2. Aurora kinase C (AURKC) localizes on chromosomes, where it replaces AURKB as the primary AURK in the chromosomal passenger complex (CPC) via INCENP binding. Although AURKA compensates for CPC function in oocytes lacking AURKB/C, it is unknown whether AURKA binds INCENP in wild type mouse oocytes. ZINC08918027 (ZC) is an inhibitor that prevents the interaction between AURKB and INCENP in mitotic cells. We hypothesized that ZC would block CPC function of any AURK isoform. ZC treatment caused defects in meiotic progression and spindle building. By Western blotting and immunofluorescence, we observed that activated AURKA and AURKC levels in ZC-treated oocytes decreased compared to controls. These results suggest there is a population of AURKA-CPC in mouse oocytes. These data together suggest that INCENP-dependent AURKA and AURKC activities are needed for spindle bipolarity and meiotic progression. The online version contains supplementary material available at 10.1186/s13104-022-05987-4.
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